I think the Oumuamua anomaly, although on a larger scale, is in the same category as some unexplained flyby anomalies involving the Earth and a number of space probes.
I predict we will see more of these flyby anomalies as we observe more interstellar objects passing through our solar system, and that these anomalies could be evidence of a new kind of physics. Harry ************ Interstellar visitor 'Oumuamua could still be alien technology, new study hints Aliens? Or a chunk of solid hydrogen? Which idea makes less sense? https://www.livescience.com/oumuamua-interstellar-hydrogen-or-aliens.html?fbclid=IwAR0QtPQOSYHDJqkkr_KsF-mNnLXokhA7mACjycaHfN4ojYQ895bHKt0618Y